21357712

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{337}}^1$

素因数の和:595

約数の個数: 40

約数和(自身を含む): 44133336

約数和(自身を除く): 22775624

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 233, 272, 337, 466, 674, 932, 1348, 1864, 2696, 3728, 3961, 5392, 5729, 7922, 11458, 15844, 22916, 31688, 45832, 63376, 78521, 91664, 157042, 314084, 628168, 1256336, 1334857, 2669714, 5339428, 10678856, 21357712]

約数ペア:

[(1, 21357712), (2, 10678856), (4, 5339428), (8, 2669714), (16, 1334857), (17, 1256336), (34, 628168), (68, 314084), (136, 157042), (233, 91664), (272, 78521), (337, 63376), (466, 45832), (674, 31688), (932, 22916), (1348, 15844), (1864, 11458), (2696, 7922), (3728, 5729), (3961, 5392)]